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Volume 30 Issue 5
Aug.  2021
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Article Contents
JIA Tingli, LIU Xun, ZHAO Sufen, CHEN Ziyu. Magnetization reversal mechanism in FePt: Au granular films[J]. Chinese Journal of Engineering, 2008, 30(5): 509-512. doi: 10.13374/j.issn1001-053x.2008.05.014
Citation: JIA Tingli, LIU Xun, ZHAO Sufen, CHEN Ziyu. Magnetization reversal mechanism in FePt: Au granular films[J]. Chinese Journal of Engineering, 2008, 30(5): 509-512. doi: 10.13374/j.issn1001-053x.2008.05.014

Magnetization reversal mechanism in FePt: Au granular films

doi: 10.13374/j.issn1001-053x.2008.05.014
  • Received Date: 2007-03-26
  • Rev Recd Date: 2007-04-25
  • Available Online: 2021-08-06
  • A microstructure model of ordered FePt:Au nanogranular films was constructed. The magnetization reversal mechanism of FePt:Au granular films with different percentages of non-magnetic Au were investigated by micro-magnetic simulation. The results show that the reversal mechanism significantly depends on the percentage of Au. As the interaction coefficient of proportionalityβ, which reflects the percentage of Au, is greater than 0.4, the reversal model is coherent and the coercive force increases slightly with reducing ft. But forβ〈 0.3, the coercive force increases quickly with reducing fl, and the consistency of magnetization reversal is weakened. It is estimated that as the space length between the FePt granulars varies from 3 nm to 4 nm, the interaction of granular exchange is near to zero and the magnetization reversal is incoherent.

     

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      沈陽化工大學材料科學與工程學院 沈陽 110142

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